Influenza A virus has a wide range of host animals and mutates easily. Nowadays anti-influenza A drugs used in clinic limit to two main classes which are the M2 ion channel blocker and the viral neuraminidase inhibitors. So some virus strains have shown drug resistance in some areas. Natural medicine or traditional Chinese medicine has a long history in China. With the development of science and technology

more and more scientific researchers use experimental pharmacology methods to study natural medicines for preventing and treating influenza A. Natual medicine has shown great potential and advantages in clinical and scientific research because of its wide biological activity and low toxicity. This paper introduces some active ingredients of anti-influenza A virus in natural medicines discovered in recent years.